Chemistry experiments performable at home with adult supervision

Carolyn and Steven Murov, murovs@yosemite.edu

http://murov.info/chemhome.pdf (see next pages)

http://science-mattersblog.blogspot.com/

http://www.chymist.com/

http://www.reachoutmichigan.org/funexperiments/agesubject/chemistry.html

http://reekoscience.com/

http://scifun.chem.wisc.edu/HOMEEXPTS/HOMEEXPTS.HTML

http://www.chem4kids.com/

http://a2zhomeschooling.com/explore/chemistry_kids/chemistry_experiments_at_home/

http://chemistry.about.com/cs/homeexperiments/

http://www.thecatalyst.org/m05demos.html

http://www.sciencebob.com/index.php

http://www.creative-chemistry.org.uk/index.htm

http://www.homeadvisor.com/article.show.Science-Experiments-for-All-Around-Your-Home.17372.html

http://www.acs.org/content/acs/en/education/whatischemistry/adventures-in-chemistry.html

http://science4fun.info/

Developed by Carolyn and Steven Murov, murovs@mjc.edu, http://murov.info/ Web sites of selected science supply companies. Arbor Scientific - http://www.arborsci.com/ Edmund Scientific - http://www.scientificsonline.com/ Educational Innovations - http://www.teachersource.com/ Exploratorium - http://www.exploratorium.edu/store Flinn Scientific - http://www.flinnsci.com/ Museum Tour - http://www.museumtour.com/ Nasco West - 4825 Stoddard Rd, Modesto, 209 545-1600 - http://www.enasco.com/ Oriental Trading Company - http://www.orientaltrading.com Raft - http://www.raft.net/ Sargent-Welch - http://sargentwelch.com/resources/a/47/ Sempco, Inc. - http://www.sempcoinc.com/ Steve Spangler - http://www.stevespanglerscience.com/

K-12 Science Directory for Stanislaus County, CA - http://murov.info/science.htm Climate change directory - http://murov.info/climatechange.htm Powerpoint pre-shows and quizzes - http://murov.info/PPTPreshows.htm

Allow several minutes for mixing to occur.

Try Vis a Vis wet erase felt tip pens and also food coloring.

Red cabbage, filter paper (coffee filter paper should work), household solutions such as vinegar, lemon juice, glass cleaner with ammonia, aqueous baking soda. Instructions: Place several leaves of red cabbage leaves in a small pan and cover with water. Bring water to a boil and immerse filter paper into the now purple colored liquid. Allow the paper to dry and test with different solutions. Experiment 7. Preparation of a type of slime. Add 20 mL of water to 20 grams of Elmer's glue. Add 20 mL of borax solution (1 teaspoon borax/cup of water) and stir or several minutes. Try the following experiments with your slime:

a. Pull the slime slowly and record your observations. b. Pull the slime quickly and record your observations. c. Mount a funnel in a ring on a ringstand. Put some slime into the funnel and push it through the funnel.

Record your observations as the slime comes out of the funnel. d. Try some other safe experiments, describe them, and record your observations

Experiment 8. Modeling a catalyst. Catalysts are often needed to cause polymerizations to occur. To model the use of a catalyst, fold a dollar bill into thirds like a fan. Place two paper clips on the dollar bill as illustrated in the figure with one paper clip clipping the first two thirds and the second clipping the last two thirds. Grab the two ends of the dollar bill with your left and right hands and quickly pull in opposite directions. Explain how the dollar bill in this "magic trick" serves as a model for a catalyst and comment on the quality of the analogy. (I want to thank Dr. Alan McCormack of California State University at San Diego for sharing this analogy.)

2nd

1st

Red cabbage juice contains a dye that is sensitive to the acidity or pH of the solution much like litmus. The paper should turn to a pinkish color when acid is added (pH<7) and green when base is added (pH>7).

Otherwise, the lake would fill with ice and fish could not survive in the lake.

In the figure, the solids sink in their liquids except for water (#3).

Blue Gum Ave. MJC West Campus. http://www.mjc.edu/instruction/sm

Chemistry at Home – Answer Sheet Name________________________ Date________________________ School_______________________ Grade_______________________ Teacher_________________________ Experiment 1 - Cola Boat Brand _______________ _______________ _______________ Number of regular floaters _______________ _______________ _______________ Number of regular sinkers _______________ _______________ _______________ Number of diet floaters _______________ _______________ _______________ Number of diet sinkers _______________ _______________ _______________ Conclusions Experiment 2 - On a Tear Observations Conclusions Experiment 3 - Color the Water Observations Conclusions

Experiment 4 - What Is in It? Brand ______________ _______________ ______________ ______________ Colors ______________ _______________ ______________ ______________ ______________ _______________ ______________ ______________ ______________ _______________ ______________ ______________ ______________ _______________ ______________ ______________

Conclusions

Experiment 5 - Acid or Base

Observations

Conclusions

Experiment 6 - Let It Foam

Observations

Conclusions

Experiment 7 - Preparation of a Type of Slime.

Observations

Conclusions

Experiment 8 - Modeling a catalyst.

Observations

Conclusions